Solenoid Patents (Class 353/106)
Rotary slide carrier (Class 353/107)
  • Reciprocating slide animation projector and method of projection
    Patent number: 8444274
    Abstract: A slide animation projector for the yard comprises a solenoid that forces a translating rod to reciprocate in a spiked motion. An elongated slot in the translating rod seats a slide cartridge having at least two stationary, adjacent images. The slide reciprocates in repeated succession, wherein the adjacent images give an impression of movement.
    Type: Grant
    Filed: May 11, 2009
    Date of Patent: May 21, 2013
    Assignee: Nottingham Spirk Design Associates
    Inventors: John R. Nottingham, John W. Spirk, Douglas Gall, Patrick Brown, William Rabbitt, Trevor Jackson
  • Projector control mechanism
    Patent number: 4008953
    Abstract: A control mechanism for controlling the reciprocating movement of a pusher for a picture-holder in a transparency projector of the type in which a rotating shaft serves to reciprocate the pusher during the course of a 360.degree. rotation of the shaft. A continuously rotating electric motor drives the shaft through two gear stages and a coupling member effects the coupling of the motor to the shaft first, through the first stage and then through the second stage.
    Type: Grant
    Filed: October 22, 1975
    Date of Patent: February 22, 1977
    Inventor: Serge Besancenot